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Question 1.
Which of the following chart types would be used to monitor the average weight of the contents of a box of cereal?

  1. 17_x.gif-chart
  2. R-chart
  3. p-chart
  4. c-chart
  5. none of the above

Question 2.
Which of the following chart types would be used to monitor the fraction of a production lot of desktops that had scratches on the surface?

  1. 17_x.gif-chart
  2. R-chart
  3. p-chart
  4. c-chart
  5. none of the above

Question 3.
Which of the following chart types would be used to monitor the range of the diameter of forged steel rods within a production lot?

  1.         17_x.gif-chart
  2. R-chart
  3. p-chart
  4. c-chart
  5. none of the above

Question 4.
Which of the following chart types would be used to monitor the number of errors per page in a printed document?

  1. 17_x.gif-chart
  2. R-chart
  3. p-chart
  4. c-chart
  5. none of the above

Question 5.
Natural variations are the many sources of variation within a process that

  1. are not perfect.
  2. have several assignable causes of variation.
  3. are out of control.
  4. are in statistical control.
  5. none of the above

Question 6.
Who of the following individuals was credited for making the distinction between common and special causes of variation?

  1. Juran
  2. Deming
  3. Shewart
  4. DuPont
  5. none of the above

Question 7.
We use control charts to monitor

  1. random variation.
  2. assignable variation.
  3. natural variation.
  4. all of the above.
  5. none of the above.

Question 8.
Assignable variations may be due to

  1. variations in raw materials.
  2. limitations of the process.
  3. limitations in the skills of the operator.
  4. all of the above.
  5. none of the above.

Question 9.
If the average of the samples falls within the upper and lower tolerance limits, then

  1. the process is out of control.
  2. the process is unequivocally in control.
  3. the process is said to be normal.
  4. the process may or may not be in control.
  5. none of the above

Question 10.
p-charts are based on the

  1. normal distribution.
  2. Poisson distribution.
  3. binomial distribution.
  4. negative exponential distribution.
  5. none of the above

An R-chart is used to monitor ________.

  1. the average number of defects per unit
  2. the range of a measured variable
  3. the average of a measured variable
  4. the number of defects per unit of outputs

An  17_x.gif-chart is used to monitor _______.

  1. the range of a measured variable
  2. the average number of defects per unit
  3. the average of a measured variable
  4. the number of defects per unit of outputs

A p-chart is used to monitor _________.

  1. the range of a measured variable
  2. the number of defects per unit of outputs
  3. the average number defective in a production lot
  4. the fraction defective of a production lot

A c-chart is used to monitor _________.

  1. the average value of a measured variable
  2. the fraction defective in a production lot
  3. the number defective in a production lot
  4. the range of a measured variable

If we want to use a sample size of 10 and establish a 317_s.gif limit for a range chart, the UCLR will be given by _______.

  1. 2.7541717_r.gif
  2. 2.0041717_r.gif
  3. 1.7771717_r.gif
  4. 2.1141717_r.gif
  5. 1.5861717_r.gif

If the process standard deviation is difficult to compute, we calculate the upper control limit for an 17_x.gif-chart as _________.

  1. ( 17_7a.gif)
  2.         17_7b.gif
  3.         17_7c.gif

________ refers to a quality emphasis that encompasses the entire organization.

  1. QFM
  2. SQC
  3. TQM
  4. VQM
  5. BQM

A control chart for the number of defects per unit is based on the _________ distribution.

  1. Poisson
  2. normal
  3. beta
  4. binomial
  5. uniform

A company is producing hula hoops. The average diameter of the hula hoops is 36 inches. Five hoops are inspected and the range is determined. The average range for all samples is 3 inches. The upper limit for the R-chart would be ______. 

  1. 7.32 inches
  2. 6.34 inches
  3. 6.17 inches
  4. 6.01 inches
  5. 6.85 inches

The ____________ is the statistical foundation of control charts for variables.

  1. Poisson distribution
  2. binomial distribution
  3. central limit theorem
  4. DuPont research
  5. beta distribution



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